DE-CIX launches dual-path Azure links in five cities

DE-CIX has introduced a secondary, physically distinct route into Microsoft Azure in five global cities, aiming to eliminate single points of failure for cloud-bound traffic. The new Azure ExpressRoute Metro service provides two dedicated connections per city, terminating at separate Azure facilities. If one link fails—whether due to fiber cuts, power loss, or facility issues—traffic automatically reroutes through the alternate path, preserving uptime for critical workloads such as AI training and real-time analytics.

The service is now operational in New York, Frankfurt, Madrid, Amsterdam, and Singapore. DE-CIX operates 29 Azure on-ramps across 24 cities, allowing customers to access these redundant connections remotely via its backbone even in locations where the exchange lacks a direct Azure presence. The platform also supports AWS, Google Cloud, Oracle Cloud, and IBM Cloud, aggregating nearly a terabit of hyperscaler bandwidth across over 160 on-ramps. This consolidation simplifies multi-cloud and remote-backup strategies by offloading the complexity of managing redundant connectivity from individual enterprises to the exchange itself.

How the redundancy works

Azure ExpressRoute Metro leverages two geographically distinct Azure peering locations within the same metropolitan area. Traffic entering either location is treated as part of the same logical connection, enabling seamless failover without manual intervention. DE-CIX’s backbone ensures that customers in cities without a local Azure on-ramp can still reach the nearest redundant pair via a single, managed path. The design reflects a broader industry shift toward treating physical separation as a baseline requirement rather than an optional safeguard, particularly as cloud outages grow more costly.

Christoph Dietzel, Global Head of Products and Research at DE-CIX, emphasized that the redundancy is built into the exchange’s infrastructure by default. "Physically separating network interconnects is standard practice for resilient operations," he stated, framing the service as a way for businesses to adopt multi-cloud or remote-backup strategies without having to engineer the connectivity themselves.

"Physically separating network interconnects is just standard practice for resilient operations, and the company bakes that into how it builds every exchange." — Christoph Dietzel, Global Head of Products and Research, DE-CIX (Hosting Discussion)

Microsoft’s Sudha Mahajan, a partner on the Azure Cloud & AI team, noted that the DE-CIX integration provides a low-latency route directly into Microsoft’s network. The ExpressRoute Metro architecture, she added, ensures that critical workloads remain operational even if one segment of the connection fails.

Why redundancy is becoming non-negotiable

The launch coincides with a period of heightened scrutiny on cloud reliability. AI workloads, which often involve high-stakes, latency-sensitive processes, have amplified the financial and operational costs of downtime. While most days pass without incident, the rare outage can disrupt services for hours or longer, making redundancy a prerequisite for enterprises that cannot tolerate interruptions. DE-CIX’s expansion of Azure ExpressRoute Metro reflects this shift, positioning physical separation as a default expectation rather than an add-on feature.

The exchange’s broader portfolio of hyperscaler connections further underscores the trend toward consolidation. By offering a single platform for AWS, Google Cloud, Oracle Cloud, and IBM Cloud alongside Azure, DE-CIX allows customers to centralize their multi-cloud connectivity. This reduces the operational overhead of managing multiple redundant paths across different providers, particularly for organizations with distributed teams or global footprints.

What to watch

The rollout in five cities marks an initial phase, with potential for expansion into additional markets. Enterprises evaluating the service will likely focus on two factors: the latency differential between the primary and backup paths, and the ease of integrating the redundant connections into existing network architectures. For now, the service targets organizations already using DE-CIX for hyperscaler connectivity, but broader adoption could hinge on how seamlessly it integrates with other cloud providers’ redundancy frameworks.